Wide Area Persistent Scatterer Interferometry: Algorithms and Examples

Abstract

The persistent scatterer interferometry (PSI) is a well established monitoring technique for urban areas. It has been updated in order to process wide areas with the accepted characteristics in precision and resolution. Of course, the covered processing area now includes rural areas with a low persistent scatterer (PS) density. In order to bridge forested areas and water bodies, low quality and more distant PSs need to be included into the reference network. The development of the wide area product (WAP) succeeded to cope with the resulting difficulties resulting in spatial error propagation. In this paper, the developed WAP system is described and a processing example is presented.